The Artemis Racing AC72 catamaran lies overturned in San Francisco Bay after it capsized during training for the America's Cup. Two-time Olympic sailing medalist Simpson, 36, of Great Britain was killed in the accident. Noah Berger, AP

Simpson was working as a strategist for Artemis Racing ahead of the America's Cup. Here, Simpson races at the 2011 Weymouth and Portland International Regatta in Weymouth, England. Clive Mason, Getty Images

The overturned Artemis Racing AC72 catamaran is towed past Treasure Island after the boat capsized during training in San Francisco Bay. Artemis Racing said Simpson died when the capsized boat's platform trapped him underwater for about 10 minutes. Karl Mondon, San Jose Mercury News via AP